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(No Modli) S VANSTONB MACHINE FOR MAKING NUTS.

No. 550,208. Patented Nov. 19, 1895.

INVENTOR WITNESSES 2 O 481) H. Qmmdin 744/ flttorney HAMvPKOTO-III'HQWASHINGIONDL.

* UNITED STATES PATENT OFFICE.

SAMUEL VANSTONE, OF PROVIDENCE, RHODE ISLAND.

MACHINE FOR MAKING NUTS.

SPECIFICATION forming part of Letters Patent No. 550,208, dated November19, 1895. Application filed May 31, 1895. Serial llo. 551,174. (Nomodel.)

' Providence, in the county of Providence and State of Rhode Island,have invented certain new and useful Improvements in Machines for MakingNuts and other Articles; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in theart to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to lettersof reference marked thereon, which form a part of this specification.

In the drawings, Figure 1 is a vertical section of a machine embodyingmy invention. Fig. 2 is a plan view of the same with the over-- hangingarm A and its adjuncts removed and lever J in section. Fig. 3 is a planview of die F. Fig. 4 is a side view of the same. Fig. 5 is a sectionalview on the line a; m, Fig. 1, and Fig. 6 is a plan view of a modifiedform of die F.

This invention has relation to the manufacture of nuts and otherarticles, and is designed to provide means for forming such articleswhereby they are finished by the action of the dies instead of bymilling, as has been usual heretofore.

IVith this object in view the invention consists in the novel process ofmanufacture and in the novel construction and combination of parts, allas hereinafter described, and pointed out in the appended claims.

In the accompanying drawings I have shown the invention as embodied in amachine designed for the manufacture of nuts, and the followingdescription will be chiefly confined thereto. I desire it to beunderstood,'however, that by changing the contour of the die, which ishereinafter termed the broaching-die, I may by a similar process performother work.

In carrying out my invention as applied to the manufacture of nuts thestock or bar from which the nuts are to be formed after being properlypunched is moved forward, or is carried to a second punch or die havinga concave cutting-face and working in conjunction with a concavestationary die. This punch and die not only cut the blank from the baror stock, but also crown such blank on both the upper and lower faces.The

frame of the press, having an overhanging arm A and table A B designatesa reciprocating punch and die carrier,which moves in vertical guides ofthe arm A and is actuated by means of any suitable gear, such as thedisk 0, carried by a shaft 0 and having a crank-pin c, on which isjournaled a link 0 which is connected to the upper. portion of the saidcarrier. D is a punch on the under side of said 0&11l61',WlllCh makesthe perforations in the bar or stock, (indicated at E is the secondpunch or die, which has a concave face d, and which acts in conjunctionwith a stationary concave die-plate E to make the crown upon the twofaces of the blank and to cut or sever said blanks from the bar orstock.

F F F designate a series of three dies or die parts, which are seatedhorizontally in a vertical opening F through the table, one aboveanother. The first die or die part F of the series has an opening whichis of the form of the nut and which is a trifle smaller than the nut.The opening of the second die or die part F is slightly smaller thanthat of the second. The under face of the parts or plates F and F areformed with a series of radial grooves f, which communicate withvertical openings in channels f in the table around the opening F Thegrooves and channels are for the purpose of permitting the escape of thetrimmings or chips cut from the blank as they are forced through thedies, whereby the latter are prevented from clogging and are madeself-clearing.

G designates the punch or movable die which forces the blanks throughthe stationary dies and which is carried by the carrier B. This punch isdesigned to fit the opening in the middle die into which it descends toabout one thirty'second of an inch from the bottom thereof, so as tokeep the last die sharp. The succeeding blank forces the first blankinto the last die and nearly through it.

Although I have referred to three dies F F F they may be more properlyreferred to as forming one die, of which they constitute differentparts. This die I term the broaching-die. I do not, however, wish toconfine myself to the use of the three dies or die parts, as two or moremay be employed.

For the purpose of carrying the blanks from the punch E to thebroaching-dies a slide II may be provided, which works underneath aslotted plate I and which is actuated by a lever J, which is fulcrumedat J, a short distance from its upper end, to the arm A. Said lever atits upper end has j ournaled thereto a friction-roller K, which travelsin contact with the periphery of the disk C, being actuated to operatethe lever J and slide. II by means of a cam projection (1 of the saiddisk. A spring M, attached to the lever and to the frame, returns saidslide and lever to; their first positions as soon as the roller K is:freed by the projection Other suitable means for feeding the blanks 1may, however, be employed.

It will be observed that the nuts formed as 3 above described areperfectly reversible, being crowned upon both sides. Should it be,desired to crown them upon one side only, 1 one of the dies E E may bemade flat in-! stead of concave.

It will be obvious that by changing the form of the broaching-die or byforming internal projections therein, as shown in Fig. (i, such die maybe employed for other work.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a machine for the purposes described, the combination with abroaching die consistin g of two or more superposed dies or die partshaving openings therethrough of progressively increasing diameter, andprovided with outwardly extending grooves or passages which communicatewith escape openings which are independent of the openings through thedies or die parts, of a reciprocator die parts, with the exception ofthe lower one having each a series of outwardly extending radial grooveswhich con'ununicate with channels in the die supporting part,substantially as specified.

3. The combination of a reciprocating punch and die carrier having aperforating punch, a crowning and cutting die, and a forcing die orpunch, of stationary dies or die plates which co-operate respectivelywith aid perforating punch and with the crowning and cutting die, and abroaching die made up of two or more parts through which the blanks aredesigned to be forced by the forcing die or punch, the openings in saidparts being of progressively decreasing diameters, together with meansfor actuating said punch and die carrier and for carrying the blanksfrom the crowning and cutting die to the broachin g die, substantiallyas specified.

4. A broaching die having two or more parts, the openings of which areof progressively decreasing size, and having also clearance openings orchannels which communicate with the die openings but are independentthereof, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL VANSTONE.

\Vitnesses LUTHER C. CROSSMAN, MICHAEL ODAY.

